mirror of
https://blitiri.com.ar/repos/chasquid
synced 2026-10-28 15:02:28 +00:00
Alberto Bertogli
b3b1f39d85
Today, we fold header names with strings.EqualFold when signing, but strings.ToLower when verifying. This should be harmless for valid messages (that have only ASCII characters in the header names), but if one contains an (invalid) header with a non-ASCII character, we could fail to verify the message we sign. The inconsistency would only happen if a header has a non-ASCII character that strings.EqualFold and strings.ToLower handle differently (like "ſubject", with U+017F). To make signing and verifying consistent, this patch makes signing use strings.ToLower. This bug was found by fuzzing the sign-verify cycle, which will be added in a later patch.
chasquid
chasquid is an SMTP (email) server with a focus on simplicity, security, and ease of operation.
It is designed mainly for individuals and small groups.
It's written in Go, and distributed under the Apache license 2.0.
Features
- Easy
- Easy to configure.
- Hard to mis-configure in ways that are harmful or insecure (e.g. no open relay, or clear-text authentication).
- Monitoring HTTP server, with exported variables and tracing to help debugging.
- Integrated with Debian, Ubuntu, Arch, and Alpine.
- Supports using Dovecot for authentication.
- Useful
- Secure
- Tracking of per-domain TLS support, prevents connection downgrading.
- Multiple TLS certificates.
- Easy integration with Let's Encrypt.
- SPF and MTA-STS checking.
- DKIM support (signing and verification).
Documentation
The how-to guide and the installation guide are the best starting points on how to install, configure and run chasquid.
You will find all documentation here.
Contact
If you have any questions, comments or patches, please send them to the mailing
list,
chasquid@googlegroups.com.
To subscribe, send an email to chasquid+subscribe@googlegroups.com.
Security issues can be reported privately to albertito@blitiri.com.ar.
Bug reports and pull requests on GitHub are also welcome.
You can also reach out via IRC, #chasquid on OFTC.